Figure 2.

Forelimb anatomy of Mirusavis, IVPP V18692. (a) Photograph and (b) line drawing of the right forelimb; (c) distal end of humerus, proximal ends of ulna and radius; (d) right hindlimb. Abbreviations as in Fig. 1, except for: am, alular metacarpal; ad1 and ad2, proximal and ungual phalanges of alular digit; bi, bicipital crest; br, brachial impression; btr, bicipital tubercle of radius; btu, bicipital crest of ulna; cn, cranial cnemial crest; co, attachment for M. coracobrachialis anterior; dc, dorsal condyle; dct, dorsal cotyla; de, deltopectoral crest; dep, dorsal epicondyle; fo, fossa; fp, flexor process; ma, major metacarpal; mad1, mad2 and mad3, proximal, intermediate and ungual phalanges of major digit; mi, minor metacarpal; mid1, proximal phalanx of minor digit; ol, olecranon; vc, ventral condyle; vct, ventral cotyla. The arrow indicates the circular fossa on the proximocranial surface of the humerus. Scale bars equal 10 mm in (a), (b) and (d) and 5 mm in (c).